IS : 4514 - 1968 (Reaffirmed 1998) Edition 1.1 (1979-01) Indian Standard SPECIFICATION FOR FORCEPS, TONSIL DISSECTING (WAUGH'S PATTERN) (Incorporating Amendment No. 1) UDC 615.472.41 : 616.22-089 © BIS 2004 BUREAU MANAK BHAVAN , 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 OF INDIAN STANDARDS Price Group 2 IS : 4514 - 1968 Indian Standard SPECIFICATION FOR FORCEPS, TONSIL DISSECTING (WAUGH'S PATTERN) Surgical Instruments Sectional Committee, CPDC 11 Chairman COL R. D. AYYAR Representing Safdarjang Hospital, Central Government Health Scheme (Ministry of Health & Family Planning), New Delhi Members CHIEF SALES MANAGER WORKS MANAGER ( Alternate ) SHRI R. D. GUPTA DR (KUMARI) S. D. GUPTA BRIG IQBAL CHAND SHRI G. B. JAKHETIA SHRI V. KRISHNAMOORTHY SHRI SANTI KUMAR MUKERJI SHRI M. G. PANDIT DR A. RAMDAS SHRI S. SEN GUPTA SHRI MAHESH M. SHAH MAJ SOHAN SINGH SHRI K. L. TALWAR SHRI A. N. VIG SHRI R. N. VIG ( Alternate ) Director General, ISI ( Ex-officio Member ) SHRI A. B. RAO, Director (Consr Prod) ( Secretary ) ( Continued on page 2 ) National Metallurgical Jamshedpur Lady Hardinge New Delhi Medical Laboratory College & (CSIR), Hospital, Indian Drugs & Pharmaceuticals Ltd, New Delhi Directorate General of Armed Forces Medical Services (Ministry of Defence) Development Industries Commissioner, Small Scale Directorate General of Technical Development H. Mukerji & Banerjee Surgical Pvt Ltd, Calcutta Ministry of Health & Family Planning Ministry of Railways Baruipur Surgical Instrument Centre (Directorate of Industries, Government of West Bengal) Shah Medical & Surgical Co Ltd, Baroda Directorate General of Inspection (Ministry of Defence) Chief Inspectorate of General Stores [Ministry of Defence (DGI)], Kanpur ISCOMED Industries Private Ltd, Bombay BUREAU MANAK BHAVAN , 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 OF INDIAN STANDARDS IS : 4514 - 1968 ( Continued from page 1 ) Precision Type Surgical Instruments Subcommittee, CPDC 11 : 5 Convener DR J. L. GUPTA Representing Safdarjang Hospital, Central Government Health Scheme (Ministry of Health & Family Planning), New Delhi Members DR JACOB CHANDI DR G. S. GOPALAN DR GOPINATH BRIG IQBAL CHAND SHRI SANTI KUMAR MUKERJI SHRI H. C. MUKHERJEA SHRI J. PRABHAKAR DR T. T. RAMALINGAM DR P. B. RAO Christian Medical College, Vellore Jaya Surgicals, Madras All India Institute of Medical Sciences, New Delhi Directorate General of Armed Forces Medical Services (Ministry of Defence) H. Mukerji & Banerjee Surgical Pvt Ltd, Calcutta Chief Inspectorate of General Stores [Ministry of Defence (DGI)], Kanpur Indian Drugs & Pharmaceuticals Ltd, Madras In personal capacity ( 4 A Kilpauk Garden Road, Kilpauk, Madras ) Jawaharlal Institute of Post-Graduate Medical Education and Research, Pondicherry SHRI G. JAYA PRASAD ( Alternate ) 2 IS : 4514 - 1968 Indian Standard SPECIFICATION FOR FORCEPS, TONSIL DISSECTING (WAUGH'S PATTERN) 0. F O R E W O R D 0.1 This Indian Standard was adopted by the Indian Standards Institution on 21 February 1968, after the draft finalized by the Surgical Instruments Sectional Committee had been approved by the Consumer Products Division Council. 0.2 The formulation of Indian Standards on surgical instruments has been taken up on the recommendations of the Advisory Committee for Development of Surgical Instruments, Equipment and Appliances, Government of India. 0.3 Although other types of tonsil-dissecting forceps are available commercially, Waugh's pattern is widely popular and has been covered by this standard. 0.4 This standard forms one of a series on tonsil forceps. Others in the series are: IS : 4487-1968 Forceps, tonsil artery (Birkett's pattern) IS : 4488-1968 Forceps, tonsil holding (Muck's and White's pattern) IS : 4490-1968 Forceps, dilating, Trousseau's IS : 4504-1968 Forceps, peritonsillar 0.5 In preparing this standard, considerable assistance has been derived from the following: IND/GS/MED/37(b) Forceps, dissecting, toothed, 7 in. Chief Inspectorate of General Stores, Ministry of Defence, Government of India. IND/GS/MED/112(b) Forceps, dissecting, toothed (Waugh's), 20.5 cm. Chief Inspectorate of General Stores, Ministry of Defence, Government of India. 0.6 This edition 1.1 incorporates Amendment No. 1 (January 1979). Side bar indicates modification of the text as the result of incorporation of the amendment. 0.7 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. *Rules for rounding off numerical values ( revised ). 3 IS : 4514 - 1968 1. SCOPE 1.1 This standard covers the requirements for tonsil-dissecting forceps (Waugh's pattern), toothed, toothed with serrations, and serrated. 2. MATERIAL 2.1 Arms of the forceps shall be made from stainless steel conforming to Designation 22Cr13 or 30Cr13 of Schedule V of IS : 1570-1961*. 2.2 Rivets, guide-pin and check-pin, if used, shall be made either of the same material as used for the instrument or shall conform to Designation 20Cr18Ni2 of Schedule V of IS : 1570-1961*. 3. SHAPE AND DIMENSIONS 3.1 The shape and dimensions of the forceps (toothed) shall be as given in Fig. 1. The forceps (toothed and serrated) shall be as given in Fig. 1 except that the serrations shall be in accordance with Fig. 1A. Forceps (serrated) shall be in accordance with Fig. 1 except that its tips shall be (serrated) only in accordance with Fig. 1A. 3.2 The joint shall conform to 5 of Section 2 of IS : 3642-1966. 3.3 The toothed end shall comply with Section 4 of IS : 3642-1966. The teeth shall conform to the dimensions specified in Fig. 1 and the combination used shall be 1 in 2 teeth. 3.4 The serrations shall be of diamond pattern conforming to 2.3 of Section 1 of IS : 3642-1966 and shall be as given in Fig. 1A. 4. WORKMANSHIP AND FINISH 4.1 The arms of the forceps shall be symmetrical, balanced and shall open and close with even movement. The teeth shall be sharp, clean and bright, and shall so match as to register properly without overriding, sticking or locking. The registration shall correspond with the registration of guide-pin with guide hole when provided. The arm shall be free from scales, burrs, pits, seams and other surface defects. The forceps shall be passivated and polished bright. All edges of the forceps shall be smooth and even and shall not be sharp. The faces of the arms shall be highly polished. The serrations shall be clear and clean. 5. HEAT TREATMENT 5.1 The forceps shall be suitably hardened and tempered to give a uniform hardness of 430 to 490 HV. *Schedules for wrought steels for general engineering purposes. General requirements for surgical instruments. 4 5 IS : 4514 - 1968 FIG. 1 TONSIL DISSECTING FORCEPS, TOOTHED, WAUGH'S PATTERN IS : 4514 - 1968 FIG. 1A 6. TESTS ALTERNATE SHAPE OF JAWS 6.1 Flexibility -- The flexibility of the arms of the forceps shall be tested in the following manner: a) The arms of the forceps after maximum closure by manual compression shall not take a permanent set and the teeth shall continue to engage and disengage accurately without sticking. b) The joint end of the forceps shall be fixed in a vice so that the riveted or welded joint, or parallel portion of the folded joint, is gripped firmly. In the case of forceps with folded joint, the joint shall be tightly interleaved with an aluminium strip before fixing the forceps in the vice so that deformation of the joint is avoided. By the application of force at the tip of the arm, one arm of the forceps shall be deflected in a plane at right angles to the plane of the arm by a distance of 50 mm measured at the tip of the forceps. On release of the force, no permanent set shall be observed. The test shall be repeated on the other arm. 6.2 Load Closure -- The teeth of the forceps shall just close when a load of 170 ± 10 gf be applied at the first finger groove from the tip. 6.3 Performance -- A latex sheet 0.05 mm thick shall be stretched over the tip of one of the fingers and then gripped lightly by the teeth of the forceps. The forceps shall hold the latex sheet firmly without any tendency to slipping as judged when pulled through a distance of 5 mm. When the arms of the forceps are pressed further, the latex sheet shall puncture neatly and after puncturing the teeth, shall tear the latex sheet when the forceps is pulled, in the direction of the pull. 6 IS : 4514 - 1968 6.4 Corrosion Resistance -- The instrument shall satisfy the boiling and autoclaving test as specified in IS : 7531-1975*. 7. MARKING 7.1 Each forceps shall be clearly and indelibly marked with the manufacturer's name, initials or trade-mark and words `STAINLESS STEEL'. 7.1.1 The forceps may also be marked with the ISI Certification Mark. NOTE -- The use of the ISI Certification Mark is governed by the provisions of the Indian Standards Institution (Certification Marks) Act, and the Rules and Regulations made thereunder. Presence of this mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard, under a well-defined system of inspection, testing and quality control during production. This system, which is devised and supervised by ISI and operated by the producer, has the further safeguard that the products as actually marketed are continuously checked by ISI for conformity to the standard. Details of conditions, under which a licence for the use of the ISI Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution. 8. PACKING 8.1 The forceps shall be wrapped individually in moisture-proof paper or polyethylene bag, taking care to see that the teeth are well protected. They shall be packed in a manner that coming into contact with each other is avoided. *Method for boiling and autoclaving test for corrosion resistance of stainless steel surgical instruments. 7 INDIAN STANDARDS ON Surgical Instruments IS: 3318-1965 3319-1965 3320-1965 3642-1966 3643-1966 3644-1966 3645-1966 3758-1966 3759-1966 3760-1966 3767-1966 3787-1966 3788-1966 3799-1966 3807-1966 4085-1967 4089-1967 4094-1967 4244-1967 4245-1967 4275-1967 4281-1967 4282-1967 4487-1968 4488-1968 4489-1968 4490-1968 4504-1968 General requirements for surgical scalpels and knives Surgical scalpels with detachable blades (Bard Parker type) Surgical scalpels General requirements for surgical instruments Dissecting forceps (serrated and toothed) Artery forceps (Halsted Mosquite pattern) Artery forceps (Spencer Wells pattern) Hooks, aural Blades, skin grafting Probe, aural, Jobson Horne's pattern Hook, skin, Gillies pattern Gag, mouth, Cleft palate Specula, aural Forceps, aural and nasal, crocodile action Forceps, dressing, aural and nasal Knives, amputating Forceps, clip removing, Michel's Forceps, sterilizer (Cheatle's) Retractors, skin, double ended Needle holder (Gillies) combined with scissors, for plastic surgery Scissors, Kilner's for plastic surgery Scissors, Mc Indoe's, for plastic surgery Forceps, dissecting, plastic surgery Forceps, tonsil artery (Birkett's pattern) Forceps, tonsil holding (Muck's and White's pattern) Forceps, nasal turbinate, Luc's Forceps, dilating, Troussceau's Forceps, peritonsillar ( under print ) Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of `BIS Catalogue' and `Standards : Monthly Additions'. This Indian Standard has been developed by Technical Committee : CPDC 11 and amended by CPDC 26 Amendments Issued Since Publication Amend No. Amd. No. 1 Date of Issue January 1979 BUREAU OF INDIAN STANDARDS Headquarters: Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002. Telephones: 323 01 31, 323 33 75, 323 94 02 Regional Offices: Central Eastern : Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI 110002 : 1/14 C. I. T. Scheme VII M, V. I. P. Road, Kankurgachi KOLKATA 700054 Telegrams: Manaksanstha (Common to all offices) Telephone 323 76 17 323 38 41 337 84 99, 337 85 61 337 86 26, 337 91 20 60 38 43 60 20 25 235 02 16, 235 04 42 235 15 19, 235 23 15 832 92 95, 832 78 58 832 78 91, 832 78 92 Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022 Southern : C. I. T. Campus, IV Cross Road, CHENNAI 600113 Western : Manakalaya, E9 MIDC, Marol, Andheri (East) MUMBAI 400093 BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. Branches : AHMEDABAD. FARIDABAD. GHAZIABAD. GUWAHATI. 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